java.lang.NullPointerException
        at org.netbeans.modules.web.jsf.refactoring.Occurrences.getPackageOccurrences(Occurrences.java:485)
        at org.netbeans.modules.web.jsf.refactoring.JSFRefactoringUtils.renamePackage(JSFRefactoringUtils.java:137)
        at org.netbeans.modules.web.jsf.refactoring.JSFRenamePlugin.prepare(JSFRenamePlugin.java:129)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:380)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:202)
        at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:760)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)